"NeXT Computer (the original 68030 cube) was a high end workstation that was manufactured between 1988 - 1990. Back then it was a very expensive machine as a complete system would start at $6500 (in 1988 dollars). The machine is a 1 foot cube magnesium case that houses the computer. At the time, its performance was impressive, with a Motorola 68030 CPU running at a screaming 25Mhz, a dedicated floating point CPU, and a digital signal processor built into the system. NeXT cubes featured a magneto-optical drive that stored a whopping 256 Megabytes (by comparison, high end Mac systems at the time might have featured a 20 Megabyte hard drive.) In its day, this was the "Ferrari" of desktop systems!" No new information for the average OSNews reader, but lots of beautiful photos for a beautiful Saturday afternoon.

I used both Yellow box and the prior version that was Openstep branded on NT4. It had issues, but the UI wasn't all that different. Might be the version you've seen? The main issue was that the NIB files for the Windows version of the code were completely separate to the Openstep ones, so you needed to create the UI twice to make it cross platform. However, the actual UI is loosely coupled to the underlying controller, so the actual code rarely needed to change. Back then, most controls were declared as "id" in the controllers (which is probably bad form now, modern Objective-C seems to want to use real class names), but it just worked. And the fact that the same skillset worked on Openstep's version of Project Builder and Interface Builder as it did on the Windows version, seriously sped up development. Shame it was a dead end product and it never went anywhere. The short period I used it was wonderful.